CN110998414A - Head-up display device and light-transmitting member for the same - Google Patents
Head-up display device and light-transmitting member for the same Download PDFInfo
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- CN110998414A CN110998414A CN201880051646.9A CN201880051646A CN110998414A CN 110998414 A CN110998414 A CN 110998414A CN 201880051646 A CN201880051646 A CN 201880051646A CN 110998414 A CN110998414 A CN 110998414A
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- light
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- tungsten oxide
- oxide particles
- composite tungsten
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Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/206—Filters comprising particles embedded in a solid matrix
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2258—Oxides; Hydroxides of metals of tungsten
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Toxicology (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Instrument Panels (AREA)
- Polarising Elements (AREA)
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- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention aims to provide a light-transmitting cover which can simply inhibit heat input from the sun to a display of a head-up display without using expensive components and does not damage the brightness of an image projected by the display. The present invention is a light-transmitting member for a head-up display device, which is formed of a resin composition comprising a polycarbonate resin and has a thickness in the range of 0.2 to 0.6mm, wherein the light-transmitting member contains composite tungsten oxide particles as an infrared shielding agent, and the content A (wt%) of the composite tungsten oxide particles and the thickness B (mm) of a layer containing the composite tungsten oxide particles satisfy the following formula (1). (0.02. ltoreq. A.ltoreq.B.ltoreq.0.12 in formula (1))
Description
Technical Field
The present invention relates to a head-up display device and a light-transmitting member for the head-up display device.
Background
The head-up display device displays an image on a display such as a display device, and maps the image onto a glass or the like positioned in a field of view of a user. In this case, unlike a display device used indoors, outdoor light (sunlight) is incident on the display device in the reverse direction, and heat rays (infrared rays) in the outdoor light damage the display device due to an increase in temperature.
In order to prevent the heat ray from entering, patent document 1 proposes the following: a reflecting portion is provided in a light path from a display element to a windshield, and a cold mirror coated with an optical interference film that transmits infrared rays and reflects visible light is provided in the reflecting portion, or an infrared reflecting plate that reflects infrared rays and transmits visible light is provided in the light path.
Therefore, in recent years, in order to prevent the penetration of heat rays without impairing the brightness of the display, a polarizing plate has been disposed in the optical path. In this case, patent document 2 proposes the following: the light-transmitting cover is provided with a polarization characteristic to prevent dust or dirt from entering from a projection port for projecting an image from the apparatus main body to a projection unit such as a glass.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 61-184132
Patent document 2: japanese patent laid-open publication No. 2017-32944
Disclosure of Invention
A head-up display device has an important problem of shielding heat rays in outdoor light, and thus various measures such as a cold mirror and a polarizing plate have been taken. However, since the cold mirror, the polarizing plate, and the like are subjected to very complicated steps, they are very expensive as components.
Accordingly, a first object of the present invention is to provide a light-transmitting member, particularly a light-transmitting cover, which can easily suppress heat input from the sun to a display of a head-up display without using such expensive members and which does not impair the brightness of an image projected by the display.
In addition, a second object of the present invention is to provide a light-transmitting member, particularly a light-transmitting cover, which has visibility not only when naked eyes but also when passing through polarized sunglasses, in addition to solving the above-described problems.
A third object of the present invention is to provide a light-transmitting member that suppresses further heat input against an increase in heat input accompanying an increase in size of a head-up display in recent years, without impairing the brightness of an image projected by the display.
The present inventors have made extensive studies to solve the above-mentioned problems, and as a result, have found that a transparent member itself used in a head-up display device has a shielding function in the infrared region, and that an effect equivalent to that of a polarizing plate can be exhibited by a specific transparent member, and have completed the present invention.
Further, it was found that visibility with both naked eyes and polarized sunglasses, which are the second problem, can be achieved by setting the in-plane retardation within a specific range, and the present invention was completed.
That is, the present invention relates to the following transparent members (1) to (7) and a head-up display device (8) using the transparent members.
(1) A light-transmitting member for a head-up display device, which is formed of a polycarbonate resin composition and has a thickness in the range of 0.2 to 0.6mm, wherein the light-transmitting member contains composite tungsten oxide particles as an infrared shielding agent, and the content A (wt%) of the composite tungsten oxide particles and the thickness B (mm) of a layer containing the composite tungsten oxide particles satisfy the following formula.
0.02≤A×B≤0.12 (1)
(2) The light-transmitting member according to the above (1), wherein the composite tungsten oxide particles are composite tungsten oxide particles represented by a general formula MxWyOz (wherein M is at least 1 element selected from H, He, alkali metals, alkaline earth metals, rare earth elements, Mg, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In, Tl, Si, Ge, Sn, Pb, Sb, B, F, P, S, Se, Br, Te, Ti, Nb, V, Mo, Ta, Re, Be, Hf, Os, Bi, I, W is tungsten, O is oxygen, x is 0.1. ltoreq. x 0.5, y is 0.5. ltoreq. y.ltoreq.1.5, z is 2.0. ltoreq. z.ltoreq.3.5).
(3) The light-transmitting member according to the item (1), wherein the average light transmittance at a wavelength of 380 to 780nm is 70% or more and the average light transmittance at a wavelength of 700 to 2500nm is 50% or less.
(4) The light-transmitting member according to any one of the above 1 to 3, wherein the in-plane retardation is in the range of 20 to 170 nm.
(5) The light-transmitting member according to any one of the above 1 to 3, wherein the in-plane retardation is in the range of 100nm or less.
(6) The light-transmitting member according to any one of the above (1) to (5), wherein the light-transmitting cover is used for a head-up display device.
(7) The light-transmitting member according to the above (6), wherein a polarizing function is further imparted.
(8) A head-up display device comprising the light-transmitting member according to any one of (1) to (7) above and a display for outputting an image to the outside through the light-transmitting member.
Since the light-transmitting member itself has light transmittance equivalent to that of the polarizing plate and high heat ray shielding performance against heat input from the sun to the display device, temperature rise of the head-up display device can be suppressed more easily. Further, by setting the in-plane retardation within a specific range, it is possible to achieve both the visibility with naked eyes and the visibility of polarized sunglasses. Further, since the present invention is different from conventional methods of shielding heat rays such as a polarizing plate and a cold mirror, the present invention can be used as a method of shielding more heat rays for coping with an increase in size of a head-up display device by using the same.
Drawings
Fig. 1 shows an example of the structure of a head-up display.
FIG. 2 is a schematic view of a method for evaluating the brightness of a test piece.
Detailed Description
In general, a head-up display is configured of a display (1) and a transparent member (2) as shown in fig. 1, and an output image is projected onto a projection surface (3) such as glass. Here, since it is possible to suppress display abnormality due to dust, dirt, or the like and further alleviate the influence due to heat rays, it is preferable that the display device is disposed in a space partitioned by the case (4) and the light transmitting member, and a polarizing plate, a reflecting mirror (a reflecting plate, a cold mirror, or the like), or the like is disposed therein.
A display (1) is a head-up display device that outputs a projected image. The display (1) may be a display known per se, and a Liquid Crystal Display (LCD) is preferable because an image with excellent visibility can be projected in the presence of outdoor light by polarized light. The light source used for the display is not particularly limited, and a light source with less irradiation of heat rays is preferable, and from such a viewpoint, organic EL and LED can be preferably exemplified.
The light-transmitting member of the present invention is preferably disposed between the display (1) and the light-transmitting cover (2), and is attached to the housing (4), and is particularly preferably used as a light-transmitting cover for preventing dust and dirt from entering from the projection opening.
The transparent member of the present invention will be described in detail below.
The light-transmitting member is formed from a polycarbonate resin composition, and is characterized in that the light-transmitting member contains composite tungsten oxide particles as an infrared shielding agent, the thickness of the composite tungsten oxide particles is 0.2-0.6 mm, the content A (weight%) of the composite tungsten oxide particles and the thickness B (mm) of a layer containing the composite tungsten oxide particles satisfy the following formula.
0.02≤A×B≤0.12
It was found that when such a thin member contains composite tungsten oxide particles at a specific concentration, it is possible to achieve both brightness and heat ray shielding equivalent to those of a polarizing plate.
The product of the content (a) of the composite tungsten oxide particles and the thickness (B) of the light-transmitting member can be made within the above range, thereby providing high luminance and high heat ray shielding. Preferably 0.03. ltoreq. A.ltoreq.B.ltoreq.0.09, and more preferably 0.05. ltoreq. A.ltoreq.B.ltoreq.0.07. When the value of a × B is less than the lower limit, the heat ray shielding effect is small, and when the value of a × B exceeds the upper limit, the luminance is greatly reduced. The thickness of the transparent member is preferably 0.3 to 0.55mm, more preferably 0.35 to 0.5 mm. When the thickness of the light-transmitting member exceeds the upper limit, the haze tends to be high. On the other hand, if the thickness is less than the lower limit, the content of the composite tungsten oxide particles is relatively increased, and poor dispersion tends to occur.
The polycarbonate resin in the present invention can be produced by, for example, reacting a dihydric phenol with a carbonate precursor. The dihydric phenol used herein is not particularly limited, but is preferably bis (4-hydroxyphenyl) alkane in view of transparency and the like, and particularly preferably bisphenol a in view of impact resistance.
As the carbonate precursor, a carbonyl halide, a carbonic diester, a haloformate, or the like can be used, and specifically, phosgene, diphenyl carbonate, a dihaloformate of a dihydric phenol, or the like can be mentioned.
When the polycarbonate resin is produced by the interfacial polymerization method using the above-mentioned dihydric phenol and a carbonate precursor, a catalyst, a terminal terminator, an antioxidant for preventing oxidation of the dihydric phenol, and the like, which are known per se, may be used as necessary. The polycarbonate resin of the present invention includes a branched polycarbonate resin obtained by copolymerizing a polyfunctional aromatic compound having three or more functions, a polyester carbonate resin obtained by copolymerizing an aromatic or aliphatic (including alicyclic) bifunctional carboxylic acid, a copolymerized polycarbonate resin obtained by copolymerizing a bifunctional alcohol (including alicyclic), and a polyester carbonate resin obtained by copolymerizing the bifunctional carboxylic acid and the bifunctional alcohol together.
As described above, the light-transmitting member of the present invention is formed of a polycarbonate resin composition containing a polycarbonate resin and an infrared shielding agent, and may further contain other additives and resins as necessary within a range not to impair the object of the present invention. The proportion of the polycarbonate-based resin in the polycarbonate-based resin composition is preferably 50% by weight or more, more preferably 70% by weight or more, and still more preferably 90% by weight or more, based on the weight of the resin composition.
When a resin other than the polycarbonate-based resin is used in combination in the polycarbonate-based resin composition of the present invention, a resin having good compatibility with the polycarbonate-based resin is preferable from the viewpoint of the effect of the present invention, and for example, an acrylic resin having excellent permeability can be used.
As other additives to be added to the polycarbonate resin composition of the present invention, stabilizers and weather-resistant agents are preferably mentioned.
The viscosity average molecular weight of the polycarbonate resin is preferably 14000 to 100000, more preferably 20000 to 30000, even more preferably 22000 to 28000, and most preferably 23000 to 26000. When the molecular weight is too low as exceeding the above range, mechanical properties such as impact value are insufficient, and cracks are likely to occur. When the molecular weight is higher than the above range, injection molding becomes difficult, and crack failure is likely to occur due to residual stress or the like. In a further preferable range, the composition is excellent in both impact resistance and moldability. The polycarbonate resin may be one obtained by mixing polycarbonate resins having viscosity average molecular weights outside the above ranges.
The viscosity average molecular weight (MV) of the polycarbonate resin was determined by substituting the specific viscosity (η sp) obtained from a solution prepared by dissolving 0.7g of the polycarbonate resin in 100ml of methylene chloride at 20 ℃ into the following equation.
η sp/c ═ η ] +0.45 × [ η ]2c (where [ η ] is the limiting viscosity)
[η]＝1.23×10－4MV 0.83
c＝0.7
The composite tungsten oxide particles of the present invention are preferably particles represented by MxWyOz (wherein M represents an element selected from the group consisting of H, He, alkali metals, alkaline earth metals, rare earth elements, Mg, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In, Tl, Si, Ge, Sn, Pb, Sb, B, F, P, S, Se, Br, Te, Ti, Nb, V, Mo, Ta, Re, Be, Hf, Os, Bi, and I, and x, y, and z are numbers satisfying the formula of 0.01. ltoreq. x.ltoreq.1, 0.001. ltoreq. x/y.ltoreq.1, 2.2. ltoreq. z/y.ltoreq.3.0).
Among them, M is preferably an element selected from Li, Na, K, Rb, Cs, Mg, Ca, Sr and Ba, and most preferably K, Rb or Cs. In addition, the range of x is preferably 0.01. ltoreq. x.ltoreq.0.5, more preferably 0.2. ltoreq. x.ltoreq.0.4. Further, the ranges of x/y and z/y are preferably 0.01. ltoreq. x/y. ltoreq.0.5, 2.7. ltoreq. z/y. ltoreq.3.0, more preferably 0.2. ltoreq. x/y. ltoreq.0.4, and 2.8. ltoreq. z/y. ltoreq.3.0, respectively.
The composite tungsten oxide particles can be obtained by heat-treating a tungsten compound as a starting material in an inert gas atmosphere or a reducing gas atmosphere. The composite tungsten oxide particles obtained by this heat treatment have sufficient near-infrared shielding ability and have properties ideal as infrared shielding fine particles.
The particle diameter of the composite tungsten oxide particles is preferably 1nm to 800nm, more preferably 1nm to 600nm, and still more preferably 1nm to 300 nm. If the particle diameter is less than 1nm, the agglomeration effect becomes large, and thus poor dispersibility tends to occur, and if it is more than the upper limit, the haze of the transparent resin molded article may become high.
Examples of the method of dispersing the composite tungsten oxide particles in the polycarbonate resin include a method of directly adding the composite tungsten oxide particles coated with the composite tungsten oxide particles or the composite tungsten oxide particles on the surface, and a method of preparing a master batch diluted with 1 to 100 times the amount of the polycarbonate resin and adding the master batch.
When the polycarbonate-based resin is compounded with the composite tungsten oxide particles, a heat stabilizer, a weather resistant agent, or the like may be added.
The light-transmitting member of the present invention preferably has an average light transmittance at a wavelength of 380 to 780nm of 70% or more and an average light transmittance at a wavelength of 700 to 2500nm of 50% or less, and more preferably has an average light transmittance at a wavelength of 380 to 780nm of 75% or more and an average light transmittance at a wavelength of 700 to 2500nm of 30% or less. If the average light transmittance at a wavelength of 380 to 780nm is less than 70%, the luminance is greatly decreased, and if the average light transmittance at a wavelength of 700 to 2500nm is more than 50%, the heat ray shielding effect is small.
The light-transmitting member of the present invention may have a single-layer structure or a multilayer structure. In the case of a multilayer structure, at least one layer thereof may be formed of a polycarbonate resin composition, and examples thereof include a multilayer structure in which a layer of an acrylic resin is laminated on a layer formed of a polycarbonate resin composition. In addition, the transparent member of the present invention may be coated on a part or all of one surface or both surfaces. The pencil hardness of the light-transmitting member of the present invention is not easily scratched even when wiped for cleaning, and is preferably B or more, and more preferably HB or more. From such a viewpoint, a light-transmitting member provided with a hard coat layer coated with a hard coating agent is preferable, and a hard coating agent known per se can be suitably used as the hard coating agent.
Specific examples of commercially available hard coating agents include BEAMSET 575, a product of Mitsukawa chemical industries, and U15HA, a product of Xinzhongcun chemical industries.
In the display device of the present invention, in order to further prevent the intrusion of heat rays (infrared rays), a reflecting portion may be provided in addition to the light transmitting member of the present invention in the optical path from the display element to the windshield, and a cold mirror coated with an optical interference film that transmits infrared rays and reflects visible light may be provided in the reflecting portion, or an infrared reflecting plate that reflects infrared rays and transmits visible light may be provided in the optical path, and a polarizing plate may be disposed in the optical path in order to prevent the intrusion of heat rays without impairing the brightness of the display.
The light-transmitting member of the present invention preferably has less deviation in the phase difference and slow axis directions. From the viewpoint of suppressing variation in luminance, the in-plane phase of the light-transmitting member of the present invention is preferably 100nm or less, more preferably 75nm or less, and further preferably 50nm or less. If the retardation is high, the luminance is easily affected if the retardation is used without considering the direction of the slow axis of the light-transmitting member.
However, the present invention is characterized in that the infrared ray is shielded by the composite tungsten oxide particles and the visibility to the naked eye is highly balanced.
Further, by setting the in-plane retardation to a specific range, it is possible to highly balance the visibility of both naked eyes and polarized sunglasses. From such a viewpoint, the lower limit of the in-plane phase of the light-transmitting member is preferably 20nm, more preferably 35nm, and still more preferably 60 nm. When the in-plane retardation is less than the lower limit, it is difficult to obtain the brightness when passing through the polarized sunglasses. On the other hand, the upper limit of the in-plane retardation of the light-transmitting member when importance is placed on the visibility of the polarizing sunglasses is preferably 170nm, more preferably 160nm, still more preferably 140nm, and particularly preferably 100 nm. When the in-plane retardation exceeds the upper limit, the luminance when passing through the polarizing sunglasses increases, but the luminance largely changes when the direction of the slow axis of the light-transmitting member slightly changes.
Examples
Examples of the present embodiment are shown below. The present invention is not limited to these examples.
The present invention will be described in more detail with reference to examples.
[ example 1]
L-1250 manufactured by Kiyowa Kabushiki Kaisha was used as a polycarbonate resin, YMDS-874 manufactured by Sumitomo Metal mining Co., Ltd. (tungsten oxide composite particles concentration of about 23 wt%) was used as an infrared shielding agent, the polycarbonate resin and the infrared shielding agent were integrally mixed by a mixer in such a ratio that the amount of tungsten oxide composite particles was as described in tables 1 and 2, and melt-kneaded, TEX30 α (fully intermeshing, co-rotating, double-screw) manufactured by vented twin-screw extruder (manufactured by Nippon Steel Co., Ltd.) was used in a type in which the kneading zone was 1 located just before the vent, and extrusion conditions were 20kg/h of discharge amount, 150rpm of screw rotation speed, and 3kPa of vacuum degree of exhaust gas, and an extrusion temperature was 280 ℃ from the 1 st supply port to the die head portion.
(test piece preparation)
The obtained pellets were dried at 110 to 120 ℃ for 6 hours by a hot air circulation dryer, and then a test piece for evaluation having a thickness of 0.4mm was produced using a film forming apparatus [ KZW15 TW-30 MG-NH, FPU 15-240 manufactured by TECHNOVEL, Inc. ] under conditions of an extrusion temperature of 280 ℃ and a chill roll temperature of 148 ℃.
Examples 2 to 5 and comparative examples 1 to 2
Examples 2 to 5 and comparative examples 1 to 2 were carried out in the same manner as in example 1 except that the changes shown in tables 1 and 2 were made.
(evaluation items)
(1) Brightness of light
The test piece (2) was cut to a 50mm square, and the light source (1), the polarizing plate (7), the test piece (2), and the glass (3) were arranged as shown in fig. 2. the test piece (2) was rotated so that the characters that were reflected to the glass (3) and were visible were adjusted to be brightest, and the characters that were reflected to the glass and were visible were visually confirmed, it was confirmed by a luminance meter (BM-7, manufactured by TOPCON corporation) that the case that was brighter and significantly better than the polarizing plate of comparative example 4 was evaluated as good, the case that was dark was evaluated as x, and the case that was equivalent was evaluated as △.
Then, the results of the above evaluations were evaluated with naked eyes without a polarizing plate disposed between the glass and the luminance meter, and the results of the disposition of the polarizing plate were evaluated as polarized sunglasses.
(2) Temperature rise
The test piece was cut out to 50X 100mm and placed above the temperature measuring part of the bar thermometer by about 50mm in the open air on a sunny day to shield sunlight, and it is considered that the part of the bar thermometer where sunlight is not shielded by the test piece is placed in the shadow in order to prevent heat transfer from the body of the bar thermometer, and the evaluation was made with reference to example 3, and the case where the temperature is lower than that was good was evaluated as good, the case where the temperature is higher was evaluated as X, and the case where the temperature is equal was evaluated as △.
(3) Average transmittance (380 to 780nm)
The measurement was carried out in accordance with JIS K7361 using SH-7000 manufactured by Nippon Denshoku industries Co., Ltd.
(4) Average transmittance (700 to 2500nm)
The spectral transmittance was measured at intervals of 5nm in wavelength and at a scanning speed of 600nm/min by CARY5000 manufactured by VARIAN, and the average value of the values of 700 to 2500nm was calculated.
(5) In-plane retardation
The in-plane retardation of the test piece was measured using KOBRA21SDH manufactured by prince measuring machine.
The evaluation results of examples 1 to 5 and comparative examples 1 to 2 are shown in tables 1 and 2.
[ Table 1]
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| A: content of composite tungsten oxide particles (%) | 0.14 | 0.14 | 0.14 | 0.18 | 0.07 |
| B: thickness (mm) | 0.4 | 0.6 | 0.2 | 0.4 | 0.4 |
| A(％)×B(mm) | 0.06 | 0.08 | 0.03 | 0.07 | 0.03 |
| Average transmittance (%) (380 to 780nm) | 81 | 76 | 85 | 78 | 85 |
| Brightness of light | ○ | △ | ○ | ○ | ○ |
| Average transmittance (%) (700 to 2500nm) | 23 | 13 | 44 | 16 | 44 |
| Temperature rise | ○ | ○ | △ | ○ | △ |
[ Table 2]
| Comparative example 1 | Comparative example 2 | |
| A: content of composite tungsten oxide particles (%) | 0.09 | 0.09 |
| B: thickness (mm) | 1.5 | 0.1 |
| A(％)×B(mm) | 0.14 | 0.01 |
| Average transmittance (%) (380 to 780nm) | 67 | 88 |
| Brightness of light | × | ○ |
| Average transmittance (%) (700 to 2500nm) | 4 | 66 |
| Temperature rise | ○ | × |
Comparative example 3
A test piece containing no composite tungsten oxide particles was produced in the same manner as in example 1, and evaluated in the same manner as in example 1.
Comparative example 4
A polarizing plate for a light-transmitting cover of an in-vehicle head-up display was cut out from an actual vehicle and evaluated in the same manner as in example 1. The average transmittance (380 to 780nm) was measured at 5nm intervals using VAP-7070, manufactured by Nippon spectral Co., Ltd., in the transmission axis direction, and the average value was calculated.
The evaluation results of comparative examples 3 to 4 are shown in Table 3.
[ Table 3]
The light-transmitting members obtained in examples 1 to 5 had high light-transmitting properties and high heat ray-shielding properties against heat input from the sun to the display device. On the other hand, comparative example 1, which is not claimed in the claims of thickness and a × B, is inferior in light transmittance, and comparative example 2, which is not claimed in the claims of a × B, is inferior in heat ray shielding performance due to a high temperature rise.
In comparative example 3 in which the composite tungsten oxide particles were not contained, the temperature rise was high and the heat ray shielding performance was poor, and in comparative example 4 in which a polarizing plate for a light-transmitting cover of an in-vehicle head-up display, which is a commercially available product, was used, the light transmittance was poor although the heat ray shielding performance was exhibited.
[ examples 6 to 9]
Test pieces were prepared by repeating the same operation as in example 1, except that a touch roller was provided on the side of the sheet not in contact with the cooling roller, and the pressure was adjusted so as to obtain the in-plane retardation shown in table 4.
The obtained test piece was evaluated in accordance with the configuration of fig. 2 for evaluating the luminance. For the test piece (2), the test piece (2) is rotated to adjust so that the characters reflected to the glass (3) are seen brightest. The change in luminance when the test piece (2) was rotated from this position and the direction of the slow axis was changed by 360 degrees was observed visually, and the case where the change in luminance (with naked eyes) was small was evaluated as good and the case where the change was large was evaluated as x with reference to example 7. As the visual index, the luminance meter described above can be used.
The evaluation results of examples 6 to 9 are shown in Table 4.
[ examples 10 to 15]
Test pieces were produced by repeating the same operation as in example 1 except that a touch roller was provided on the side of the sheet not in contact with the cooling roller, and a UV-curable hard coat layer was provided on each of both surfaces of the sheet in a thickness of 5 μm to obtain the in-plane retardation shown in table 5.
The obtained test piece was evaluated in accordance with the configuration of fig. 2 for evaluating the luminance. With respect to the test piece (2), the test piece (2) is rotated and adjusted so as to reflect the brightest visible characters on the glass (3). The change in luminance when the test piece (2) was rotated from this position and the direction of the slow axis was changed by 360 degrees was observed visually, and the case where the change in luminance (with naked eyes) was small was evaluated as good and the case where the change was large was evaluated as x with reference to example 7. As the visual index, the luminance meter described above can be used.
In addition, with reference to example 11, the case where the change in luminance (polarized sunglasses) was small was evaluated as ○, and the case where the change was large was evaluated as x.
The evaluation results of examples 10 to 15 are shown in Table 5.
Industrial applicability
The light-transmitting member of the present invention has high light-transmitting properties for light rays from the head-up display device to the windshield, which are equivalent to those of the polarizing plate, and high heat ray shielding properties for heat input from the sun to the display device, and therefore, can be used for the head-up display device, and is useful.
Description of the symbols
(1) Display (light source (character with transparent color on the upper surface)
(2) Light-transmitting part (test piece)
(3) Projection surface (glass plate (angle adjusted to make the text easy to be seen by observer))
(4) Shell body
(5) Polarizing plate (absorption axis direction: diagram)
Claims (8)
1. A light-transmitting member for a head-up display device, which is formed of a polycarbonate resin composition and has a thickness in the range of 0.2 to 0.6mm, contains composite tungsten oxide particles as an infrared shielding agent, and has a composite tungsten oxide particle content A and a thickness B of a layer containing the composite tungsten oxide particles which satisfy the following formula, wherein A is in terms of weight% and B is in terms of mm,
0.02≤A×B≤0.12 (1)。
2. the light-transmitting member according to claim 1, wherein the composite tungsten oxide particles are composite tungsten oxide particles represented by a general formula MxWyOz,
wherein M is more than 1 element selected from H, He, alkali metal, alkaline earth metal, rare earth element, Mg, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In, Tl, Si, Ge, Sn, Pb, Sb, B, F, P, S, Se, Br, Te, Ti, Nb, V, Mo, Ta, Re, Be, Hf, Os, Bi and I, W is tungsten, O is oxygen, x is more than or equal to 0.1 and less than or equal to 0.5, y is more than or equal to 0.5 and less than or equal to 1.5, and z is more than or equal to 2.0 and less than or equal to 3.5.
3. The light-transmitting member according to claim 1, wherein the average light transmittance at a wavelength of 380 to 780nm is 70% or more and the average light transmittance at a wavelength of 700 to 2500nm is 50% or less.
4. The light-transmitting member according to any one of claims 1 to 3, wherein the in-plane retardation is in the range of 20 to 170 nm.
5. The light-transmitting member according to any one of claims 1 to 3, wherein the in-plane retardation is in the range of 100nm or less.
6. The light-transmitting member according to any one of claims 1 to 5, wherein the light-transmitting cover is used for a head-up display device.
7. The light-transmitting member according to claim 6, wherein a polarizing function is further imparted.
8. A head-up display device comprising the light-transmitting member according to any one of claims 1 to 7 and a display for outputting an image to the outside through the light-transmitting member.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017154330 | 2017-08-09 | ||
| JP2017-154330 | 2017-08-09 | ||
| JP2018029798 | 2018-02-22 | ||
| JP2018-029798 | 2018-02-22 | ||
| PCT/JP2018/027809 WO2019031238A1 (en) | 2017-08-09 | 2018-07-25 | Head-up display device and light-transmissive member used therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110998414A true CN110998414A (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201880051646.9A Pending CN110998414A (en) | 2017-08-09 | 2018-07-25 | Head-up display device and light-transmitting member for the same |
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| Country | Link |
|---|---|
| US (1) | US20210124169A1 (en) |
| EP (1) | EP3667397B1 (en) |
| JP (1) | JP6854897B2 (en) |
| KR (1) | KR102668899B1 (en) |
| CN (1) | CN110998414A (en) |
| WO (1) | WO2019031238A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1386786A1 (en) * | 2002-07-26 | 2004-02-04 | Murakami Corporation | In-vehicle occupant image pickup apparatus |
| JP2006154516A (en) * | 2004-11-30 | 2006-06-15 | Sumitomo Metal Mining Co Ltd | Near ir beams absorption filter for plasma display panels, and plasma display panel using the same |
| CN103889917A (en) * | 2012-02-10 | 2014-06-25 | 积水化学工业株式会社 | Intermediate film for laminated glass, and laminated glass |
| CN104145206A (en) * | 2012-06-29 | 2014-11-12 | Jvc建伍株式会社 | Image display device |
| EP2878442A1 (en) * | 2013-11-29 | 2015-06-03 | Kuraray Europe GmbH | Composite glass laminates with thermal radiation shielding properties |
| WO2016147923A1 (en) * | 2015-03-13 | 2016-09-22 | 三菱樹脂株式会社 | Optical film and method for manufacturing same |
| JP2017116882A (en) * | 2015-12-25 | 2017-06-29 | 住友ベークライト株式会社 | Cover member |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61184132A (en) | 1985-02-13 | 1986-08-16 | Toyota Motor Corp | Protecting device for meter displaying element |
| JP2008250234A (en) * | 2007-03-30 | 2008-10-16 | Fujifilm Corp | Liquid crystal display |
| BRPI0722114B1 (en) * | 2007-10-23 | 2019-04-24 | Sumitomo Metal Mining Co., Ltd. | SOLAR RADIATION PROTECTION MATERIAL FOR VEHICLE WINDOWS AND VEHICLE WINDOW |
| JP5942466B2 (en) * | 2012-02-22 | 2016-06-29 | 住友金属鉱山株式会社 | Composite tungsten oxide fine particle dispersed polycarbonate resin composition, heat ray shielding molded article and heat ray shielding laminate using the same |
| EP2883848B1 (en) * | 2012-07-31 | 2018-05-23 | Sekisui Chemical Co., Ltd. | Laminated glass and method of mounting laminated glass |
| JP2015031753A (en) * | 2013-07-31 | 2015-02-16 | 日本ゼオン株式会社 | Optical laminate and liquid crystal display device |
| TWI651356B (en) * | 2014-01-23 | 2019-02-21 | 可樂麗股份有限公司 | film |
| JP2016130066A (en) * | 2015-01-13 | 2016-07-21 | パイオニア株式会社 | Head-up display, control method, program, and storage medium |
| JP6554817B2 (en) * | 2015-02-26 | 2019-08-07 | 日本ゼオン株式会社 | Optical laminate, hard coat laminate, polarizing plate and liquid crystal display device |
| JP6595250B2 (en) | 2015-08-06 | 2019-10-23 | 株式会社ポラテクノ | Head-up display device |
| JP2017125882A (en) * | 2016-01-12 | 2017-07-20 | 住友ベークライト株式会社 | screen |
| CN109071931A (en) * | 2016-01-28 | 2018-12-21 | 住友金属矿山株式会社 | Poly carbonate resin composition, hot radiation shielding formed body and hot radiation shielding laminated body |
| JP6934703B2 (en) * | 2016-02-03 | 2021-09-15 | スリーエム イノベイティブ プロパティズ カンパニー | Display device and infrared light cut film |
| CN109311280B (en) * | 2016-05-09 | 2021-10-01 | 可乐丽欧洲有限责任公司 | Multi-layer interlayer and glass laminate |
-
2018
- 2018-07-25 KR KR1020207006476A patent/KR102668899B1/en active IP Right Grant
- 2018-07-25 CN CN201880051646.9A patent/CN110998414A/en active Pending
- 2018-07-25 EP EP18845006.8A patent/EP3667397B1/en active Active
- 2018-07-25 WO PCT/JP2018/027809 patent/WO2019031238A1/en unknown
- 2018-07-25 US US16/635,651 patent/US20210124169A1/en active Pending
- 2018-07-25 JP JP2019535087A patent/JP6854897B2/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1386786A1 (en) * | 2002-07-26 | 2004-02-04 | Murakami Corporation | In-vehicle occupant image pickup apparatus |
| JP2006154516A (en) * | 2004-11-30 | 2006-06-15 | Sumitomo Metal Mining Co Ltd | Near ir beams absorption filter for plasma display panels, and plasma display panel using the same |
| CN103889917A (en) * | 2012-02-10 | 2014-06-25 | 积水化学工业株式会社 | Intermediate film for laminated glass, and laminated glass |
| CN104145206A (en) * | 2012-06-29 | 2014-11-12 | Jvc建伍株式会社 | Image display device |
| EP2878442A1 (en) * | 2013-11-29 | 2015-06-03 | Kuraray Europe GmbH | Composite glass laminates with thermal radiation shielding properties |
| WO2016147923A1 (en) * | 2015-03-13 | 2016-09-22 | 三菱樹脂株式会社 | Optical film and method for manufacturing same |
| JP2017116882A (en) * | 2015-12-25 | 2017-06-29 | 住友ベークライト株式会社 | Cover member |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3667397B1 (en) | 2023-11-29 |
| WO2019031238A1 (en) | 2019-02-14 |
| US20210124169A1 (en) | 2021-04-29 |
| JPWO2019031238A1 (en) | 2020-07-27 |
| EP3667397A4 (en) | 2020-10-28 |
| KR20200030613A (en) | 2020-03-20 |
| EP3667397A1 (en) | 2020-06-17 |
| KR102668899B1 (en) | 2024-05-23 |
| JP6854897B2 (en) | 2021-04-07 |
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